Pump for fuel line clearing and vapor lock removing device



Feb. 28, 1939. c. DALTON 2,148,929

PUMP FOR FUEL LINE CLEARING AND VAPOR LOCK REMOVING DEVICE Oiiginal Filed Oct. 20, 193i 2 Sheets-Sheet l Feb. 28, 1939. F. c. DALTON I ,9 PUMP FOR FUEL LINE CLEARING AND VAPOR LOCK REMOVING DEVICE Original Filed Oct. 20, 1936 2 Sheets-Sheet 2 amend/om F- ELDALTUN t nieJ'FeBQzs; 193 l L- N 'T DL- TAT allasza PATENT OFFICE rmroa momma enema AND varoa 1.001: amovmc'navrca Frederick c. Dalton, Portland, om. Original application October 20, 1936, Serial No; 106.703. Divided and this application Septemher a, 1937, Serial No. 162,945

2 Claims. (01. los -1o) fuel pump or vacuum tank from a reservoir or supply tank located at a remote place. I j -The fuel line from supply tank 'to carburetor 10, sometimes becomes stopped up by foreign matter or a'vapor 'lockmay occur; ineither event the I proper operation of the engine is interfered with or theengine stopped. My invention has for its prlmary object to provide a simple, inexpensive, l5 easily operable device by the use of which the fuel line maybe quickly and easily cleared out, vapor locks broken,- and in the event that the fuel pump (or tank if such be used in lieu of a fuel pump) should become broken or 29 fall to operate, fuel may nevertheless be supplied to the carburetor for such length of time as ma be required to reach arepair station. Another, object is to provide a device which can be used to lock the fuel line, shutting off the 5 supply to the carburetor, thus preventing theft of the car.

Other objects will in part be obvious and in part pointed out hereinafter.

To the attainment of the aforesaid objects and ends the invention further resides in those novelcombinations, constructions and arrangement of parts which will-be described in detail hereinafter and then pointed out in the appended claims. -reference being had to the ac- 5 comp mying drawings in which:

' Fig. 1 is a view, somewhat-diagrammatic; illus- Fig; 6 i's-a cross-section on the line H of Fig. 2.

. 50 Figfl'l is a cross-section on the'line 1-1 of Fig. 8 isaviewsimiiartol'lg. 3 with thevalve set to connect the fuel supply line to the carburetor and eutoutthe connection to thefuel pump;

-- 5 v Fig. 9 isa view similar to m a, with the valve to the other two.

set to connect the hand pump with the fuel sllp ply line and to shut-oil the connections'to the fuel pump and carburetor.

Fig. 10 is a face view of the dial plate and the I handle with pointer cooperating therewith, also 5 showing a'locking device.- Fig. ii is a detailend view of the valve.

In the drawings in which like numerals of reference indicate like parts in all the figures, l

and I represent suitable supports,v which, for

example, may be the dash and instrument boards respectively of a motor vehicle.

. Referring now more particularly to' Figs. 2 and 10 inclusive it will be seen that the valve case 4- has a flange 3 by means of which it may be rigidly mounted on the support I. The case 4 has a tapering bore 5 constituting a valve seat, and a cylindrical bore 6 through which the stub shaft 33, of the valve 3!, passes. It also has three ports, two of which, I and 8 are adjacent one another while the third I1 is at right angles A pipe fitting 9 is screwed into port 1 and connects by an elbow l0 and nut H with the pipe 12. that runs to the inlet side of the fuel pump 49, driven by theengine in the usual manner (not shown) into which is screwed an elbow 'II to which the pipe 19 is connected.

The pipe I9 is joined'through a suitable fitting Ii to the pipe 50 which connects the outletof the fuel pump to the fuel inlet of the carburetor 53. 5

Some fuel pumps 49 have a back check valvewhere pipe to connects, but when a pump is Y used which has noback check valve (or when a vacuum tank is employed in lieu of a fuel pump)" I prefer to insert a back check valve 52 in the 4 line 50 between the fuel pump and fitting Ii.

- The valve casing 4 has a pin hole 20 in which a latch pin II is located, the pin being designed to engage in the recesses 34 in the shouldered end ..of;the valve II. The hand Dump barrel I2 is rigidly secured to thevalve II (or formed integral therewith).v

and at its duh end'it has a cap 23 having a beara suitable piston 28 and is of an angular cross-% 4 section, so that by turning the shaft 25 the barrel 2! and valve}! may be turned. as one. In order that the barrel 22 and the, valve it may. be} turned and the piston 26, worked back and forth in the barrel, a suitable handle 21-28 is secured .55

on the outer end of the. red as, The head 21 of the handle carries a pointer .23- which cooperates with the dial 30; the "position on the dial being respectively indicated 'as F,-C, VL and L.

The valve 3| has a master bore 32 communicating with the interior of the barrel 22. It also has a duct 40 with ports 4|42 for effecting communication between ports I and 3; a port 43 with branch 44 to effect communication between the master bore 32 and ports 8 and I1, respectively, at times, and a port 45 containing a check valve 41, valve spring 48 and a' valve seat 46, for effecting communication between the master bore 32 and port 3 at times.

The valve ,3'l has a stub shaft 33 fitting the cylindrical bore 6 of the case 4 and carrying a disc 39, a spring 38, cup washer 31 and dowel pins 36 in apertures 35. The disc 39 presses against pin 2| and forces it into the recesses 34 in the valve 3|. Since the end of the pin 2| which enters recesses 34 is rounded or of spherical form, and as the recesses 2| are of like form 4 and shallow, it will be obvious that when the valve is turned the pins will ride out of the recess, against the tension of spring 38 exerted through plate 39, until the next recess comes into position. v

If desired any suitable locking means may be employed to secure the parts in the closed or inoperative position L" (see Fig. 10). For example such a device maycomprise a pivoted bar 54 adapted to overly the handle 29.when in the L position (dotted lines in Fig. 10) and be secured to a post 55 by a suitable padlock 56.

Operation When the parts are positioned as indicated in Fig. 1 and shown in detail in Figs. 2 to 7 inclusive and Fig. 10,-they are in their normal positions. Thus fuel is drawnfrom the supply tank (not shown) via pipe i5, through ports 8, 42, duct 40, ports 4|, 1, pipe l2 to the intake of the motor operated fuel pump 49. From the pump 49 the fuel is forced in the usual way via pipe 50 to the carburetor 53 where it is carburetted and from which it is drawn into' the engine in the well known way.

Should however a vapor look occur or the fuel line become clogged, the operator turns the handle 180 degrees from the position in Figs. 1 and 10 thereby turning valve 3| so that it assumes the position shown in Fig. 9. In this position the ports] and I! are closed but port 8 is in communication with master bore 32 via port 43- 44. By reciprocating rod 25 back and forth fuel is drawn from the tank into the barrel 22 and expelled therefrom back to the tank thereby clearing pipe line 5, after which the valve is tumed back to its normal position and the engine started again.

Should the mechanically actuated fuel pump 49- fail to operate at any time fuel may be pumped to the carburetor by moving valve 3| to the position shownin Fig. 8 (pointer 23 pointing to "C on dial 30) and reciprocating rod 25 as needed.

By turning handle 28 to the dotted line position of Fig. 10 and looking it, all fuel connections are closed so that it will be impossible for the pump 49 to draw fuel from the tank and deliver it to the carburetor, or for the hand pump 22-25-23, to be used for that purpose.

This application is a division of my application filed October 20, 1936, Serial No. 106,703, patented Nov. 9, 1937, No. 2,098,720.

While I have shown a preferred. embodiment of the invention I do not wish to be limited thereto, since changes in the details of construction andarrangement of parts may readily be made without departing from the invention and the scope of the appended claims.

From the foregoing description taken in connection with the accompanying drawings it is thought the construction, combination, and arrangement of parts will be readily understood.

What I claim is:

l. A device of the class described comprising a fixedly mounted valve case having a bore constituting a valve seat and a reduced bore constituting a bearing, a rotary valve mounted in said seat and having a stub shaft projecting through said reduced bore, a spring held on said stub shaft to keep the valve seated, a latch pin carried by said case, said valve having at least one latch pin recess, means continuously tending to force said pin into said recess, said case having a port, and said valve having a port to cooperate with the port of said case, a cylinder secured to said valve cc-axially, a piston in said cylinder, 8. piston rod passing through a bearing in the end of said cylinder and having provisions in virtue of which when said rod is turned it will turn said cylinder and valve, said valve having a connecting duct communicating with the interior of said cylinder and said valve port through which duct the fluid to and from the cylinder may be passed.

2. A device for the purposes stated, comprising a valve case having a mounting flange and being provided with a tapering valve seat and a cylindrical bore, said case having two adjacent ports and a third port at a place remote from the first two ports, a valve fitting in said seat and having a stub shaft to fit said cylindrical bore and project to the outside thereof, a spring and washers on said stub"'s liait for holding.rsaidvalve seated,

said valve having a master bore, a port for eflect- W ing communication between said master bore and and means including a hand pump connected to said valve and communicating with said master bore for turning said valve and causing flow of fluid through said valves ports which communicate with said master bore.

FREDERICK C. DALTON. 

